Door-locked controller for elevators



PATENTED MAR. 1, 1904;

c. 0. RARKRR. I DOOR LOCKED CONTROLLER FOR ELEVATORS.

APPLICATION FILED OCT. 30, 1902. RENEWED $1111.22. 1904.

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' 0. 0. HARKER. DOOR LOOKED CONTROLLER FOR ELEVATORS.

APPLICATION FILED 001'. so, 1902. RENEWED JAN. 22. 1904.v

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PATENTED MAR. 1, 1904.

0. 0. HARKER.

DOOR'LOGKBD CONTROLLER FOR ELEVATORS. APPLICATION FILED OUT. 30, 1.902.

RENEWED JAN. 22. 1904. D

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UNITED STATES Patented March 1, 1904.

PATENT OFFICE.

CHARLES 0. 'HARKER, or sIoUX'oITY, IOWA.

SPECIFICATION forming part of Letters Patent No. '7 53,572, dated March 1, 1904.

Application filed October 30, 1902. Renewed January 22, 1904. Serial No. 190,238- (No model.)

To all whom it may concern.-

Be it known that I, CHARLES O. HARKER, a citizen of the United States, residing at Sioux City, in the county of Woodbury and State of Iowa, have invented certain new and useful Improvements in Door-Locked Controllers for Elevators, of which the following is a specification, reference being had therein to the accompanying drawings. I

This invention relates to an improvement in door-locked controllers for elevators; and it is embodied in the construction and arrangement of parts presently to be described, and defined in the claims.

Generally speaking, the invention relates to an improvement in mechanism actuated by a door for rendering operative or inoperative means for controlling the elevator.

In the general class of door-locked controllers many suggestions have been advanced whereby the'movement of a single door results in the looking or unlocking of the controller.

My invention comprehends mechanism whereby the elevator-controlling means is rendered operative and inoperative solely by the joint action of the door to the shaft or well and the door on the cage, and I am not aware that heretofore it has ever been suggested to utilize the two doors jointly and coactively for preferred forms of standing-rope? type.

such purpose.

My invention also comprehends suitable mechanism for locking the controller, which mechanism is operative onlywhen a door is closed as distinguished from those devices wherein the controller is locked by means independent of the door-actuating means.

The invention also comprehends improvements in locking mechanism for the doors and in various details of construction and arrange ment presently to be described.

In the accompanyingdrawings I have shown a construction embodying the invention; but it is-to be understood that various changes and modifications are contemplated and can be made without in the least departing from the nature and spirit of the invention.

Figure l is an elevation of a section of an elevator-shaft, showing a cage and various other features, the general arrangement of the cage being shown as largely diagrammatic. Fig. 2 is a vertical section taken at a right angle to the construction shown in Fig. 1, the general features of theshaft and cage being shown conventionally without regard as to accuracy of detail, thehsame not being a part of my invention. Fig. 3 is a detailed plan ,view

of the forward edge of the well, cage-doors, and other adjacent parts. Fig. l is a side ele- 3, showing the doors partly open. Fig. 9 is a detail perspective view of the reciprocating bar. Fig. 10 is a perspective view ofthe construction of controlling-grip for use in connection witha standing-ropecontroller.

A designates the vertical upright of the elevator well or shaft, and B the cage or car,

having mounted on its bottom the controllershaft B, having a lever or shive 5, to which the controlling-rope b is attached. In this connection I would state that the controlling feature or mechanism can be of any of the In the drawings Ihave shown the operatinglever B extending into the cage. On theshaft Bfis a notched segment B working in a fixed guide B, depending from the bottom of the cage. With the notch of this segment a detent a is adapted to cooperate and when positioned in the notch prevents the rotation of the shaft B. The detent 0 is carried by arocking lever C on a suitable pin carried by brackets C on the base of the cage,

the outer end of the lever 0 being apertured,

the lever C by the Vertical movement of the bar D.

E designates a hollow casing or pillar mounted on the cage adjacent to the front edge of the door-opening, as shown in Fig. 1, and through this pillar the reciprocating bar D is passed. The upper end of the pillar E carries a housing E substantially rectangular in shape, while the pper end of the bar D carries a squared head D, having a horizontally-elongated slot d therein positioned in the upper part of the housing E. (Shown indotted lines, Fig. 3.) In the front face'of the housing E is a horizontal slot 0, corresponding in shape and size to the slot d of the head D. The normal tendency of the bar D is to move downwardly, which movement is limited, and the bar is guided by guides e in the housing E. The weight of the bar may be suflicient to trip the lever C, raising the detent c from the groove in the segment B as shown in Fig. 1. This movement of the bar is resisted by relatively light spring 6Z5, surrounding the same, as shown in Fig. i, the tendency of,

which is to normally hold the bar up against its own weight.

To look the head D in elevated position with its slot registering with the slot 6 of the casing E a suitable oscillating catch F is employed, the same being pivotally mounted on a vertically-arranged spindle f, journaled in one of the guides e and conveniently in the top of the casing, as shown in Fig. 4. This spindle has a spring f sleeved thereon, the

normal tendency of which is to force the holding-catch into position below the head D, as I The holdingtached a horizontal rod F, extending out beyond the side of the casing E and carrying} on its outer end an elongated bar F extend- 1 ing an equal distance in opposite directions, as shown in Fig. 5. To permit the oscilla tion of the retaining-catch F, an offset E is made in the housing E.

By the above-described construction it will be observed that when the head D is elevated the retaining-catch F will hold it in its elevated position, in which position the detent c on the lever C engages with the notch in the segment B locking the controller against movement. Should, however, the head D, with thebar D, be released from the retaining-catch F, it would be free to be moved downward, and thereby throw the detent out ofthe notch irpthesegment, as shown in Fig. 2. To facilitate this downward movement and to positively release the detent from the notch and-also to prevent the reciprocating bar D from moving after the catch F has been removed, I employ the following instrumentalities: Mounted on the cage-door A is a lock frame or housing (0 having mounted therein in suitable bearings a horizontal shaft G, the forward end of which projects beyond the casing and is provided with a crank-arm having a cylindrical lug g at the end of its outer face. This lug g is in diameter suflicient to enter into the slot d of the head I), and the crank-arm g, being relatively thin, is permitted to move between the head D and the adjacent face of the housing E, as shown in Fig. 4:. Therefore when the parts are brought into engagement the lug g occupies a position within the slot cl, and upon turning the shaft G the head D will be moved up 01' down, as the case may be. To effect this turning of the shaft, a hand-lever G is fixedly secured thereto, the same projecting through an opening in the casing (13. To retain this hand-lever in position of extreme adjustments up or down, a spring-keeper G is employed, having notches g with which the lever G engages, as shown more clearly in Fig. 5..

'f The means above describedconstitutes con venient' mechanism for actuating the bar positively; but it will be observed that to permit the movement of the lever Gr when the door is closed and the lug g is located in the slot of the head D it is necessary to first remove the retaining-catch F from beneath the head D. This is accomplished through the mcdium of the well-door A as the same is forced into its latching position. for accomplishing this desired result ismorc particularly shown in Figs. 6, 7, and 8 and consists conveniently of a swinging finger-bar H, which has its end extending outward to a point opposite the tripping-bar F when the cage is at the doorway. The inner end of this finger-bar H is bent obliquely downward, as at it, and thence obliquely downward in an opposite direction, as at lb, its extreme end being bent horizontally at right angles and journaled in the keeper-boxing I, as shown in Fig. 7. The boxing I has a slot II in its upper surface, and the forward face of the boxing is slotted, as at i, and through these slots project the angular portions of the trippingfinger H, as shown in Fig. 6. On the under side of the inclined face of the tripping-finger is a substantially V-shaped catch I, having an inclined upper face and a substantially horizontal lower edge. p a

J designates a pivoted locking-dog mounted on a pin j in the side of the box I, its outer end being weighted, while its inner end is extending inward substantially across the box I and directly belowthe hook-openingy" in the front face of the box I, as shown in Fig. This dog J is positioned so that when the Veshaped projection I is in its extreme forward POSI'.

tion, as shown in Fig. 6, the dog will assume a position directly backof the' same, so that the trip-linger is locked against movement on its pivot. As soon, however, as the latchinghook K of the latch mechanism for the door A of the well is forced through the opening its hooked end will be forcibly thrown down in the usual manner by the spring of the latch The mechanism and in its descent will strike the end of the dog J, forcing it down out of contact with the projection l of the trip-finger, releasing the V-shaped projection I and permitting the movement of the part H. During the closing movement of the door A the protruding end of the tripping-finger formed by the junction of the angular portions it and h is brought into contact with an actuating-spring L, and as the door is closed the springL is tensioned, the pressure being against the tripping-finger, and as the latch K tilts the dog J the pressure of the spring L will throw the tripping-finger H outward, bringing the protruding end into engagement with the trippingbar F and thereby force the retaining-catch F frombeneath the head D of the reciprocating bar D.

. In this position the movement of the handlever G will turn the crank at its end, forcing the bar D down, raising the controlling mechanism and at the same time looking the cagedoor by turning the crank vertically in the housing.

It will be observed that by the construction thus far described it is necessary that the outer door first be closed before the controlling means can be released, and, further, that the movement of the controlling means is prevented by the locking means on the cage-door and is only operated when the handle G is turned to force the reciprocating bar D downward. Therefore the complete closure of both doors is necessary before the controlling means can be releaseda principle which I believe in this particular art has never heretofore been suggested. To secure a simultaneous movement of the two doors and to unlatch the two doors at the same time, I have provided the following instrumentalitiesz' The lock K of the outer door is or may be of a conventional type having the catch K and a rigid rightangle extension is, (shown in dotted lines, Fig. 6,) against which latter extension the actuating-spiring rests. Usually this extension is is actuated by the hand of the operator. In my construction I introduce a mechanical finger is, extending through the casing of the look, its inner end arranged to press against the extension is, while its outer end is pivoted to a suitable bracketK", mounted on the side of the lock. The means for pressing this finger backward to raise the latch K consists conveniently of an elongated vertically-disposed bar L, having its opposite ends Zbent inward and pivoted, respectively,to the top and bottom of the lock-casing K, as at Z. This bar is 10- cated beyond the door and projects into the elevator-well, and between the same and the lock-casing is a vertical cross-bar Z positioned brought into contact with the finger 7c, raising the latch K and unlocking the outer door. To permit this movement being had or secured by the operator within the cage, I provide the inner or cage door with devices interlocking with or engaging the actuating-bar L, which devices consist of the following constructions Located within the casing of the lock of the inner bar a is a vibrating plate M,

' conveniently pivotallysecured at its upper end by a pivot m to the upper part of the lockcasing. (See Fig. 4.) This plate has an outwardly-curved arm M of substantially V- shaped form, the lower end being extended back and slightly upward and for the sake of rigidity of structure terminates in the bracing-arm m,formed of an extension of the plate M. This bracing-arm is positioned at the opposite side of the plate M, leaving an opening or spaces between the two arms m and M. To

move the plate M upward and inward,a curved finger or arm M is extended from the lower part m up to and passes through a guidegroove 91. at the base of the lever G. The bar. or arm M is perforated, and a pin n is passed through the perforations above the lever G. Aspring N is sleeved on the arm M between the lower end of the brace m and the under surface of the lever G, the tendency of which is to force the arm M outward to the position shown. in Fig. 5, while at the same time, owing to the loose connection between the arm M and the lever G, the gripping-arm M may be forced backward should the same meet with an obstruction'during the upward or downward movement of the cage Manifestly it is necessary to embrace the bar L on both sides, so that the doors may be moved backward and forward together. To accomplish this, I provide a movable grippin -arm O, pivoted at its upper endin the block on the inner face of the plate M. This arm 0 is bent outward on lines substantially like those of thegripping-arm M, and its opposite end is carried first upward and thence transversely into a slightly-elongated opening P in the bracket P on the side of the lock-casing. The position of the horizontal end of ,the jaw O, in connection with the pivoting of the upper end of the jaw, results in a movement of the jaw 0 toward and from the jawM, as shown in dotted lines, Figs. 4 and 8, and this movement is acquired when the handle G is moved up that is to say, when the handle G is in an elevated position the two jaws .will be drawn in or retracted and at the same time the jaw Owill be turned on its pivot transversely. This is important inthat as the operator arrives at a point where he wishesto actuate the doors he forces the handle G a downward, carrying the two jaws M and O outward and on opposite sides of the actuating-bar L, and in a continued movement the jaws are broughtinto parallelism, as shown in Fig. 4 and Fig. 8, and closely grip the sides .the doors moved backward on their rollers and upon closing of the doors the latch on the outer door is permitted to drop, entering its keeper-opening, raising the dog, permitting the spring L to force the tripping-arm over into engagement with the tripping-bar D, thereby raising the barD from its retainingcatch F and permitting the operator to raise the handle Gr, forcing the lug g downward, together with its inclosing head D and the bar D, locking thereby the controlling mechanism.

In view of the above description of the construction and the description of theoperation, it is thought that a further detail description of the operation is unnecessary. It is, however, to be observed that in the mechanism the following important features are present: first, means for uniting the two bars for conjoint movement; second, means for permitting one member of the uniting means to yield against contact with'fixed projections; third, means for preventing the actuation of the controller until both doors are firmly closed, and, fourth, convenient means for actuating a door-lockcontrolling device.

In addition to the above-described mechanism I propose to provide a stop against the elevator creeping, and this consists conveniently of a brake bar or shoe Q, pivoted at the upper end of the shaft and having its opposite ends extending on opposite sides of the suitable friction-wheels Q, mounted on the power-shaft of the elevator. The opposite ends of the brake Q have cables 9 and q, the lower ends being connected to the pivoted bar Q mounted at the base of the well. Located on the cage is a clutch R, supported on a suitable bracket 0 and having an extension 0" connected with the reciprocating bar D in amanlever C. (Shown in Fig. 1.)

' the controlling device is made in the form shown in Fig. 12, wherein the movement of the bar D actuates the lever C, tilting the clutching-loop 0 around the cable passing therethrough and draws the cable tight onto the vertical base of the bracket C attached to the base of the cage. It is to be under stood, however, that other forms of locking or clutch mechanism than those shown can be employed.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is r m 1. In a door-locked controller for elevators,

the combination with an elevator-shaft door, a cage and a door for the cage, of a controller on the cage, and means for preventing the actuation of the controller comprising mechanism having parts positioned to be actuated respectively byithe individual doors, substantially as described. a

2. A door-locked controller for elevators, in combination with a well-door and a cage-door, of means actuated in successive order by the respective doors and by the joint movement of both doors forperrnitting the movement of the controller, substantially as described.

8. In an elevator, the combination with controlling means for the elevator, of a well door and a cage-door, and mechanism actuated by the individual doors upon the joint movement of the two doors for permitting the movement i of the controller, substantially as described.

4:. In an elevator the combination with controlling instrumentalities, a lock therefor, a door on the elevator, a door for the elevatorshaft, means for actuating the lock, and mechanism for governing the action of said means operated by the individual doors and upon the movement of both doors, substantially as described.

5. In an elevator the combination with controlling means, of a lock for the controller, means for operating the look, a shaft-door and a cage-door, a lever on the cage-door for actuating the lock, and means actuated by the movement of the well-door for rendering operative the said lock-controlling means, substantially as described;

6. In an elevator the combination with a controller, and means for rendering the same operative, of a cage-door and a'well-door, means carried by the cage-door for actuating the controller-lock, and means actuated by the welldoor for permitting the actuation of said lockactuatingmeans, substantially as described.

7. In an elevator the combination with a well-door and a cage-door, of a latch on the well-door, a controller-lock on the cage, a lever for actuating the lock, and means on the cage-door actuated by the said lever for actuating the latch. q

8. In an elevator, the combination with a cage-door, a well-door, and a controller, of locking means for the controller, means carried by the cage-door for actuating said looking means,.a lock for said locking means, and a trip actuated by the well-door for releasing said lock, substantially as described.

9. In an elevator, the combination with a cage and a controller, of a lock for the controller, means for preventing the movement of said lock, and means for removing said preventing means, substantially as described.

10. In an elevator, the combination with a controller and a cage-door, of a lock for the controller, a crank on the cage-door, means actuating the controller-lock, and an independently-actuated catch for preventing the movement of the controller-lock, substantially as described. I

11. In an elevator, the combination with a controller and a cage-door, of means for looking the controller, a crank on the cage-door for actuating said locking means, a catch for preventing the action of said locking means, a trip mounted on a stationary part of the elevator-well, and means actuated by the movement of the well-door for releasing said trip, substantially 'as described.

12. In an elevator, the combination with the well, of a trip device thereon, a well-door, means actuated by the door for moving the trip device, a cage, controlling means on the cage, a lever for actuating said controlling means, a catch for rendering operative the lever-actuated means, and a projection on the catch actuated by said trip, substantially as described.

13. In combination with a controller and a cage-door, of a lock for the controller, a reciprocating bar connected with the lock, and a crank on the door detachable from said bar and adapted to engage the same to actuate the lock upon the movement of the crank, substantially as described.

14. In an elevator, the combination with a cage-door and a well-door, of means actuated by and through the conjoint movement of the doors, a lock, and means for rendering operative the lock by the said conjoint door-operated means, substantially as described.

15. In an elevator, a door-locked controlling means, and means actuated by said doorlocked controlling means for preventing the creeping of the elevator, substantially as described.

16. In an elevator, -the combination with a cage-door having a spring thereon, a doorlock controller, a tripping device with which the spring engages, a lock for said tripping device, and means on the door for releasing the said look after the spring has been tensioned against the trip, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES O. HARKER.

Witnesses:

L. S. BACON, J os. H. MILANS. 

